Boyd’s Bible Dictionary:
The colonnade on east side of the temple
(John 10:23; Acts 3:11; 5:12).
Concise Bible Dictionary:
Some porch or colonnade attached to the temple built by Herod. The Lord “walked” therein, where there was room for the Jews to gather round Him (John 10:23). When Peter and John had cured the lame man, the people congregated in the same place, and Peter addressed them. It was probably an unfrequented part of the outer temple, for the believers met there in the earliest days of the church (Acts 3:11; Acts 5:12).